<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <br />

    <el-card>
      <el-alert show-icon title="注意：只允许为第三级分类设置相关参数" type="warning" :closable="false"></el-alert>
      <!-- 选择商品分类区域 -->

      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类</span>
          <!-- 选择商品分类的级联选择框 -->
          <el-cascader
            expand-trigger="hover"
            v-model="selectCate"
            :options="cataList"
            :props="cateProps"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>

      <!-- tab页签区域 -->
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="isDisable" @click="showadd">添加参数</el-button>
          <!-- 动态参数表格 -->
          <el-table :data="manyTableData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope" closeabnle>
                <el-tag @close='handleClose(index,scope.row)' v-for="(item,index) in scope.row.attr_vals" :key="index" closable>{{item}}</el-tag>
                <!-- 添加标签 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <!-- 显示标签 -->
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="primary"
                  icon="el-icon-edit"
                  @click="showedit(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  size="mini"
                  type="danger"
                  icon="el-icon-delete"
                  @click="del(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button type="primary" size="mini" :disabled="isDisable" @click="showadd">添加属性</el-button>
          <!-- 静态属性表格 -->
          <el-table :data="onlyTableData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope" closeabnle>
                <el-tag @close='handleClose(index,scope.row)' v-for="(item,index) in scope.row.attr_vals" :key="index" closable>{{item}}</el-tag>
                <!-- 添加标签 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <!-- 显示标签 -->
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                >+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  size="mini"
                  type="primary"
                  icon="el-icon-edit"
                  @click="showedit(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  size="mini"
                  type="danger"
                  icon="el-icon-delete"
                  @click="del(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!-- 添加参数或属性对话框 -->
    <el-dialog
      :title="'添加'+titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 添加表单 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改参数或属性对话框 -->
    <el-dialog
      :title="'修改'+titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 添加表单 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>

export default {
  data() {
    return {
      editFormRules: {
        attr_name: [{ required: true, message: "请输入名称", trigger: "blur" }]
      },
      editForm: {
        attr_name: ""
      },
      editDialogVisible: false,
      addDialogVisible: false,
      activeName: "many",
      cataList: [],
      cateProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children"
      },
      selectCate: [],
      manyTableData: [],
      onlyTableData: [],
      addForm: {
        attr_name: ""
      },
      //添加表单验证规则
      addFormRules: {
        attr_name: [{ required: true, message: "请输入名称", trigger: "blur" }]
      }
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");

      if (res.meta.status !== 200) {
        return this.$message.error("获取分类信息失败");
      }
      this.cataList = res.data;
      // console.log(this.cataList);
    },
    async handleChange() {
      // console.log(this.selectCate);
      this.getP();
    },
    handleClick() {
      console.log(this.activeName);
      this.getP();
    },
    async getP() {
      if (this.selectCate.length != 3) {
        this.selectCate = [];
        this.manyTableData = []
        this.onlyTableData = []
        return;
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        { params: { sel: this.activeName } }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("获取参数列表数据失败");
      }
      res.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : [];
        item.inputVisible = false;
        item.inputValue = "";
      });
      console.log(res.data);
      if (this.activeName === "many") {
        this.manyTableData = res.data;
      } else {
        this.onlyTableData = res.data;
      }

      // console.log(this.manyTableData);
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    showadd() {
      this.addDialogVisible = true;
    },
    addParams() {
      //当用户点击对话框中的确定时，校验表单
      this.$refs.addFormRef.validate(async valid => {
        //校验不通过，return
        if (!valid) return;
        //校验通过，发送请求完成添加参数或者属性
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName,
            attr_vals: ""
          }
        );

        console.log("11" + res);
        if (res.meta.status !== 201) {
          return this.$message.error("添加" + this.titleText + "数据失败");
        }
        this.$message.success("添加" + this.titleText + "数据成功");
        this.addDialogVisible = false;
        this.getP();
      });
    },
    async showedit(attr_id) {
      console.log(attr_id);
      //发起请求获取需要修改的那个参数数据
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        { params: { attr_sel: this.activeName } }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("获取参数数据失败");
      }
      this.editForm = res.data;
      //显示修改参数.属性对话框

      this.editDialogVisible = true;
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //点击按钮修改
    editParams() {
      //验证表单
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return;

        //发送请求完成修改
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          { attr_name: this.editForm.attr_name, attr_sel: this.activeName }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("获取参数数据失败");
        }
        this.$message.success("修改" + this.titleText + "数据成功");
        this.editDialogVisible = false;
        this.handleChange();
      });
    },
    //点击删除
    async del(attr_id) {
      console.log(attr_id);
      //根据id删除对应的参数或属性
      //弹窗提示用户是否要删除
      const confirmResult = await this.$confirm(
        "请问是否要删除该" + this.titleText,
        "删除提示",
        {
          confirmButtonText: "确认删除",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);
      //如果用户点击确认，则confirmResult 为'confirm'
      //如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
      if (confirmResult != "confirm") {
        return this.$message.info("已经取消删除");
      }

      //没有取消就是要删除，发送请求完成删除
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${attr_id}`
      );

      if (res.meta.status !== 200) {
        return this.$message.error("删除参数数据失败");
      }
      this.$message.success("删除" + this.titleText + "数据成功");
      this.handleChange();
    },
    handleInputConfirm(row) {
      console.log("ok");
      if (row.inputValue.trim().length === 0) {
        row.inputValue = "";
        row.inputVisible = false;
        return;
      }

      //如果用户输的的代码合格 需要保存起来
      row.attr_vals.push(row.inputValue.trim());
      row.inputValue = "";
      row.inputVisible = false;
      this.saveAttr(row);
    },
    async saveAttr(row) {
      const { data: res } = await this.$http.put(
        `categories/${this.cateId}/attributes/${row.attr_id}`,
        {
          attr_name: row.attr_name,
          attr_sel: row.attr_sel,
          attr_vals: row.attr_vals.join(" ")
        }
      );

      if(res.meta.status!==200){
        return this.$message.error('修改失败')
      }
        return this.$message.success('修改成功')

    },
    showInput(row) {
      console.log(row);
      row.inputVisible = true;
      // nextTick :  在页面重新渲染之后 条用毁掉函数的代码
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus();
      });
    },
    handleClose(i,row){
      console.log(i,row);
      row.attr_vals.splice(i,1)
      this.saveAttr(row)
    }
  },
  computed: {
    isDisable() {
      if (this.selectCate.length != 3) {
        return true;
      }
      return false;
    },
    cateId() {
      if (this.selectCate.length === 3) {
        return this.selectCate[this.selectCate.length - 1];
      }
    },
    titleText() {
      if (this.activeName === "many") {
        return "动态参数";
      } else {
        return "静态属性";
      }
    }
  }
};
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
.el-tag {
  margin: 10px;
}
.input-new-tag {
  width: 150px;
}
</style>